I'm a full time university student and there are times I need to push myself past my limit. For example, last minute studying late at night (yes cramming isn't good, but I honestly didn't have a choice here). I'm drinking an energy drink to stay awake but it's making me feel like crap. Being a biochem student, I know how bad they are for you. So is there anything that would work equally well? I eat fine, I exercise regularly, but like I said, there are times when I need to push myself further. Any suggestions?